Thomas Adams wrote:
> Also, the curved seat tube for the stoker would make it hard to fit a
> front mech in the conventional position, so I suspect that's why the
> changer and triple chainrings are on the Captains BB.
My Gitane tandem also has a curved seat tube and came with the drive crank on the captain's BB, but I changed it shortly after buying it (over 20 years ago) to a more conventional setup. The FD has no problems on my bike at least:
http://www.os2.dhs.org/
> Do you have to use a stronger spring for the rear derailleur with
> this set up? I suspect the chain bounces around like crazy.
The Gitane came with an idler wheel on the boob tube to help prevent this, but it still managed to bounce out more than a few times before I changed the crank arrangement. I'm now using the idler wheel mounting plate to hold a cable hanger for the front derailleur cable housing.
--
John (john@os2.dhs.org)
Appleton WI USA